Metal–organic frameworks (MOFs) have emerged as a versatile platform for the rational
design of multifunctional materials, combining large specific surface areas with flexible,
periodic frameworks that can undergo reversible structural transitions, or “breathing”, upon
temperature and pressure changes, and through gas adsorption/desorption processes.
Although MOF breathing can be inferred from the analysis of adsorption isotherms, direct
observation of the structural transitions has been lacking, and the underlying processes of …